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[RewriteStatepointsForGC] Minor code cleanup [NFC]

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We can use builders to simplify part of the code and we only check for the existance of the metadata value; this enables us to delete some redundant code.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242751 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Philip Reames 2015-07-21 00:49:55 +00:00
parent a571970098
commit 052b66199d
1 changed files with 5 additions and 21 deletions
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26
lib/Transforms/Scalar/RewriteStatepointsForGC.cpp
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@ -848,14 +848,7 @@ static Value *findBasePointer(Value *I, DefiningValueMapTy &cache) {
assert(num_preds > 0 && "how did we reach here");
PHINode *phi = PHINode::Create(v->getType(), num_preds, "base_phi", v);
// Add metadata marking this as a base value
auto *const_1 = ConstantInt::get(
Type::getInt32Ty(
v->getParent()->getParent()->getParent()->getContext()),
1);
auto MDConst = ConstantAsMetadata::get(const_1);
MDNode *md = MDNode::get(
v->getParent()->getParent()->getParent()->getContext(), MDConst);
phi->setMetadata("is_base_value", md);
phi->setMetadata("is_base_value", MDNode::get(v->getContext(), {}));
states[v] = PhiState(PhiState::Conflict, phi);
} else {
SelectInst *sel = cast<SelectInst>(v);
@ -864,14 +857,7 @@ static Value *findBasePointer(Value *I, DefiningValueMapTy &cache) {
SelectInst *basesel = SelectInst::Create(sel->getCondition(), undef,
undef, "base_select", sel);
// Add metadata marking this as a base value
auto *const_1 = ConstantInt::get(
Type::getInt32Ty(
v->getParent()->getParent()->getParent()->getContext()),
1);
auto MDConst = ConstantAsMetadata::get(const_1);
MDNode *md = MDNode::get(
v->getParent()->getParent()->getParent()->getContext(), MDConst);
basesel->setMetadata("is_base_value", md);
basesel->setMetadata("is_base_value", MDNode::get(v->getContext(), {}));
states[v] = PhiState(PhiState::Conflict, basesel);
}
}
@ -1198,11 +1184,9 @@ static void CreateGCRelocates(ArrayRef<llvm::Value *> LiveVariables,
// Generate the gc.relocate call and save the result
Value *BaseIdx =
ConstantInt::get(Type::getInt32Ty(M->getContext()),
LiveStart + find_index(LiveVariables, BasePtrs[i]));
Value *LiveIdx = ConstantInt::get(
Type::getInt32Ty(M->getContext()),
LiveStart + find_index(LiveVariables, LiveVariables[i]));
Builder.getInt32(LiveStart + find_index(LiveVariables, BasePtrs[i]));
Value *LiveIdx =
Builder.getInt32(LiveStart + find_index(LiveVariables, LiveVariables[i]));
// only specify a debug name if we can give a useful one
Value *Reloc = Builder.CreateCall(